IMX8MP: TLV320AIC31xx Failed to derive required TX rate

[bbbergan]

Hello,

I am integrating the audio codec TLV320AIC3120 into a custom IMX8MP board. I have the device integrated into the Linux device tree. But when I try to play a 48kHz audio file, I get an error that says the TX rate cannot be derived, 1411200 Hz, which is 44.1kHz * 2 * 16 for the bit clock.

I'm not sure why its selecting 44.1kHz when the audio file is 48kHz. See the output and pertinent device tree sections below:

root@nitrogen8mp:~# aplay -r 48000 piano2.wav
[ 856.378182] fsl-sai 30c30000.sai: failed to derive required Tx rate: 1411200
[ 856.385276] fsl-sai 30c30000.sai: ASoC: error at snd_soc_dai_hw_params on 30c30000.sai: -22
[ 856.393670] HiFi: ASoC: error at __soc_pcm_hw_params on HiFi: -22
ALSA lib /usr/src/debug/alsa-lib/1.2.8-r0/src/pcm/pcm_direct.c:1336:(snd1_pcm_direct_initialize_slave) unable to install hw params
ALSA lib /usr/src/debug/alsa-lib/1.2.8-r0/src/pcm/pcm_dmix.c:1011:(snd_pcm_dmix_open) unable to initialize slave

	sound-tlv320aic31xx {
		compatible = "fsl,imx-audio-tlv320aic31xx";
		model = "tlv320aic31xx-hifi";
		/*audio-cpu = <&sai3>;*/
		audio-cpu = <&sai3>;
		audio-codec = <&tlv320aic31xx>;
		/*audio-asrc=<&easrc>; */
		audio-routing =
			"Ext Spk", "SPL",
			"Ext Spk", "SPR";
		mclk-id = <PLL_CLKIN_BCLK>; 
	};

	tlv320aic31xx: audio-codec@18 {
		compatible = "ti,tlv320dac3101";
		pinctrl-names = "default";
		reg = <0x18>;
		#sound-dai-cells = <0>;
		HPVDD-supply = <&regulator_3p3v>;
		SPRVDD-supply = <&regulator_5p0v>;
		SPLVDD-supply = <&regulator_5p0v>;
		AVDD-supply = <&regulator_3p3v>;
		IOVDD-supply = <&regulator_1p8v>;
		DVDD-supply = <&regulator_1p8v>;
		clocks = <&clk IMX8MP_CLK_SAI3>; 
		/*reset-gpios = <&mcp23018 4 (GPIO_ACTIVE_LOW)>;*/
		/*ai31xx-micbias-vg = <MICBIAS_AVDDV>;*/
		
	};
&sai3 {
	assigned-clocks = <&clk IMX8MP_CLK_SAI3>;
	assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;
	/*assigned-clock-rates = <12288000>;*/
	assigned-clock-rates = <24576000>;
	clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIO_BLK_CTRL_SAI3_IPG>, <&clk IMX8MP_CLK_DUMMY>,
		 <&audio_blk_ctrl IMX8MP_CLK_AUDIO_BLK_CTRL_SAI3_MCLK1>, <&clk IMX8MP_CLK_DUMMY>,
		 <&clk IMX8MP_CLK_DUMMY>;
	clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3";
	fsl,sai-mclk-direction-output;
};

IMX8MPLUS 

[ajita02]

Hi @bbbergan ,

Did you get any lead? I get same problem.

Thanks,
Ajita

[AMBh]

Hi bbbargen Do you get the solution of this problem?

[jimmychan]

Please add the following in &sai3

status = "okay";